Subglottic pressure and induced live voices of dogs with normal, reinnervated, and paralyzed larynges: II. comparison of voice function of dogs with normal and reinnervated larynges

Ueda, Noriko; Ohayama, M; Je, Harvey; Mogi, Goro; Jh, Ogura

doi:10.1002/lary.5540820111

The Laryngoscope

1972

DOI: 10.1002/lary.5540820111

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Subglottic pressure and induced live voices of dogs with normal, reinnervated, and paralyzed larynges: II. comparison of voice function of dogs with normal and reinnervated larynges

Noriko Ueda¹,

M Ohayama²,

Harvey Je³

et al.

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1972

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Cited by 7 publications

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References 14 publications

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“…The subglottic air power can be estimated as the product of the mean glottic air flow rate and the subglottic pressure. Clinically, vocal efficiency has been shown to decrease with some forms of laryngeal disease, such as invasive carcinoma and vocal cord paralysis.F-" Ueda et al 27 studied acoustic intensity. subglottic pressure, and flow rate during induced whining in dogs after a combination SLN-SLN and RLN-RLN anastamosis.…”

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A functional evaluation of ansa cervicalis nerve transfer for unilateral vocal cord paralysis: Future directions for laryngeal reinnervation

Green¹,

Berke²,

Graves³

1991

Otolaryngol.--head neck surg.

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There are a variety of methods for treating unilateral vocal cord paralysis, but to date there are few objective studies that evaluate the functional results of nerve transfer from the ansa cervicalis. Six dogs underwent unilateral recurrent laryngeal nerve section with immediate reanastamosis to the sternothyroid branch of the ansa cervicalis. After 5 to 6 months, measurements of vocal efficiency and acoustic parameters, videolaryngoscopy, videostroboscopy, and evoked electromyography were performed. Identical measurements were made in eight control dogs during normal electrically induced phonation and a simulated unilateral recurrent laryngeal nerve paralysis. Histologic analysis of both vocalis muscles, recurrent laryngeal nerves, ansa cervicalis, and the ansa-recurrent laryngeal nerve anastamosis site was performed. Evidence of reinnervation was found in all of the animals that underwent nerve transfer. The vocal efficiency and acoustic quality after ansa cervicalis nerve transfer were dependent on the degree of electrical stimulation from the transferred nerve to the reinnervated cord during phonation. In the absence of electrical stimulation to the nerve transfer, physiologic vocal cord motion could not be elicited from the reinnervated cord.

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mentioning

confidence: 99%

A functional evaluation of ansa cervicalis nerve transfer for unilateral vocal cord paralysis: Future directions for laryngeal reinnervation

Green¹,

Berke²,

Graves³

1991

Otolaryngol.--head neck surg.

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Reconstruction of Laryngeal Function for Recurrent Laryngeal Nerve Paralysis: Historical View, Advancement of Latest Investigations and a Preliminary Experiment

Satô¹,

Ogura²

1978

The Laryngoscope

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Historical investigations of the functional restoration for recurrent laryngeal nerve paralysis are reviewed and some advancement in recent studies are introduced. A preliminary experiment is reported in which the ansa hypoglossi and the sternothyroid muscle pedicle was implanted into the denervated posterior cricoarytenoid muscle in dogs. From these experiments we have concluded that the ansa hypoglossi and sternothyroid muscle pedicle, which has been shown to transmit efferent inspiratory bursts, is capable of restoring function to the paralyzed posterior cricoarytenoid muscle in some dogs.

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Function of the Interarytenoid Muscle in a Canine Laryngeal Model

Nasri¹,

Kreiman²,

Beizai³

et al. 1994

Ann Otol Rhinol Laryngol

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The interarytenoid (IA) muscle has rarely been studied in the living larynx. In this work, the role of the IA muscle in phonation was studied in three dogs by means of an in vivo phonation model. The isolated action of the IA muscle was studied by sectioning and stimulating its nerve branch. As IA activity increased, subglottic pressure increased significantly until a plateau was reached. In the absence of superior laryngeal nerve stimulation, the fundamental frequency rose with increasing IA activity. In the presence of superior laryngeal nerve stimulation, however, no significant change in fundamental frequency was observed with increasing IA activity. Measurement of adductory force demonstrated that the IA muscle adducts primarily the posterior vocal fold. In this canine model, phonation was not possible without IA stimulation, owing to a large posterior glottic chink.

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Subglottic pressure and induced live voices of dogs with normal, reinnervated, and paralyzed larynges: II. comparison of voice function of dogs with normal and reinnervated larynges

Cited by 7 publications

References 14 publications

A functional evaluation of ansa cervicalis nerve transfer for unilateral vocal cord paralysis: Future directions for laryngeal reinnervation

A functional evaluation of ansa cervicalis nerve transfer for unilateral vocal cord paralysis: Future directions for laryngeal reinnervation

Reconstruction of Laryngeal Function for Recurrent Laryngeal Nerve Paralysis: Historical View, Advancement of Latest Investigations and a Preliminary Experiment

Function of the Interarytenoid Muscle in a Canine Laryngeal Model

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